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Relationship of the Ozone Mini-Hole Over Siberia in January 2016 to Atmospheric Blocking

  • ATMOSPHERIC PHYSICS
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Abstract

Using satellite data and reanalysis data, the characteristics and mechanisms of the formation of an ozone “mini-hole” in the atmosphere over Siberia in the winter of 2015–2016 have been investigated. The relationship between the regional negative anomaly of the total ozone content (TOC), reaching –140 Dobson units, with atmospheric blocking was established. The TOC anomaly was mainly due to a decrease in the ozone content in the lower stratosphere, reaching 50% near the 70 hPa level. With the key contribution of atmospheric dynamic processes to the formation of the ozone “mini-hole,” the possibility of the contribution of ozone destruction in heterogeneous reactions on the surface of polar stratospheric clouds, due to a strong decrease in temperature in the stratosphere above the blocking region, was noted.

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Funding

This work was supported by the Russian Science Foundation, project no. 19-17-00240.

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Authors and Affiliations

  1. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences, 119017, Moscow, Russia

    S. A. Sitnov &  I. I. Mokhov

  2. Moscow State University, 119991, Moscow, Russia

    I. I. Mokhov

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  1. S. A. Sitnov
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  2. I. I. Mokhov
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Correspondence to S. A. Sitnov.

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Translated by V. Selikhanovich

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Sitnov, S.A., Mokhov, I.I. Relationship of the Ozone Mini-Hole Over Siberia in January 2016 to Atmospheric Blocking. Dokl. Earth Sc. 500, 772–776 (2021). https://doi.org/10.1134/S1028334X21090178

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  • DOI: https://doi.org/10.1134/S1028334X21090178

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